7 segment led Düğme ile 0-9 arası yakma

//ALT KISIMDAKI PİNLER
const int LED1=4;
const int LED2=5;
const int LED3=6;
const int LED4=7;

//UST KISIMDAKI PİNLER
const int LED5=8;
const int LED6=9;
const int LED7=10;
const int LED8=11;

#define Buton 2
int duzhesap=0;
int buton_durum=0;
int sayi=0;

void setup() {
pinMode(LED1,OUTPUT);
pinMode(LED2,OUTPUT);
pinMode(LED3,OUTPUT);
pinMode(LED4,OUTPUT);
pinMode(LED5,OUTPUT);
pinMode(LED6,OUTPUT);
pinMode(LED7,OUTPUT);
pinMode(LED8,OUTPUT);
//pinMode(potpin,OUTPUT);
Serial.begin(9600);

}

void loop() {
 buton_durum=digitalRead(Buton);
 if (buton_durum== 1)
 {
  if (sayi<9){
  sayi++;
  delay(250);
  Serial.println(sayi);}
    else sayi=-1;
 }


switch (sayi){
  case 0:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,LOW);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,LOW);
  digitalWrite(LED8,HIGH);
  break;
  case 1:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,HIGH);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,HIGH);
  digitalWrite(LED5,HIGH);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,HIGH);
  digitalWrite(LED8,HIGH);
  break;
  case 2:
  digitalWrite(LED1,HIGH);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,LOW);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,HIGH);
  digitalWrite(LED8,LOW);
  break;
case 3:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,HIGH);
  digitalWrite(LED8,LOW);
  break;
case 4:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,HIGH);
  digitalWrite(LED5,HIGH);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,LOW);
  digitalWrite(LED8,LOW);
  break;
case 5:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,HIGH);
  digitalWrite(LED7,LOW);
  digitalWrite(LED8,LOW);
  break;
  case 6:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,LOW);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,HIGH);
  digitalWrite(LED7,LOW);
  digitalWrite(LED8,LOW);
  break;
case 7:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,HIGH);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,HIGH);
  digitalWrite(LED8,LOW);
  break;
case 8:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,LOW);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,LOW);
  digitalWrite(LED8,LOW);
  break;
  case 9:
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  digitalWrite(LED7,LOW);
  digitalWrite(LED8,LOW);
  break;
}



}